1 Isicelo esingundoqo
I-roving engaguqukiyo abantu abadibana nayo kubomi bemihla ngemihla inesakhiwo esilula kwaye yenziwe nge-monofilaments ehambelanayo ehlanganiswe kwiinyanda.I-roving engagqwethiweyo inokwahlulwa ibe ziindidi ezimbini: i-alkali-free kunye ne-medium-alkali, ezohlulwa ikakhulu ngokomahluko wokubunjwa kweglasi.Ukuze uvelise i-rovings yeglasi efanelekileyo, ububanzi beefiber zeglasi ezisetyenzisiweyo kufuneka zibe phakathi kwe-12 kunye ne-23 μm.Ngenxa yeempawu zayo, inokusetyenziswa ngokuthe ngqo ekwenzeni ezinye izinto ezidibeneyo, ezifana neenkqubo zokujija kunye ne-pultrusion.Kwaye inokulukwa ukuba ibe ngamalaphu ajikelezayo, ngakumbi ngenxa yoxinzelelo olufanayo.Ukongeza, intsimi yokusetyenziswa kwe-roving eqoshiwe nayo ibanzi kakhulu.
1.1.1Ukuzulazula okungajikiyo ukujetha
Kwinkqubo yokubumba inaliti ye-FRP, i-twistless roving kufuneka ibe nezi mpawu zilandelayo:
(1) Ekubeni ukusika okuqhubekayo kuyadingeka kwimveliso, kuyimfuneko ukuqinisekisa ukuba umbane omncinci we-static uveliswa ngexesha lokusika, okufuna ukusebenza kakuhle kokusika.
(2) Emva kokusikwa, isilika ekrwada eninzi kangangoko kunokwenzeka iqinisekisiwe ukuba iza kuveliswa, ngoko ke ubuchule bokwenza isilika buqinisekisiwe ukuba buphezulu.Ukusebenza kakuhle kokusasaza i-roving kwimicu emva kokusika kuphezulu.
(3) Emva kokuba unqunyulwe, ukuqinisekisa ukuba umsonto okrwada unokugqunywa ngokupheleleyo kumngundo, umsonto okrwada umele ube nokwalekwa kakuhle kwefilimu.
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(5)Ngenxa yeemodeli ezahlukeneyo zemipu yokutshiza, ukuze ilungele imipu yokutshiza eyahlukeneyo, qinisekisa ukuba ubukhulu bocingo olukrwada buphakathi.
1.1.2I-Twistless Roving ye-SMC
I-SMC, ekwabizwa ngokuba yikhompawundi yokubumba amaphepha, inokubonwa kuyo yonke indawo ebomini, njengendawo ezaziwayo zemoto, iibhafu kunye nezihlalo ezahlukeneyo ezisebenzisa i-SMC roving.Kwimveliso, kukho iimfuno ezininzi zokujikeleza kwi-SMC.Kuyimfuneko ukuqinisekisa ukuchopha okulungileyo, iipropati ezilungileyo ze-antistatic, kunye noboya obuncinane ukuqinisekisa ukuba i-SMC sheet eveliswayo ifanelekile.Kwi-SMC enemibala, iimfuno zokujikeleza zihlukile, kwaye kufuneka kube lula ukungena kwi-resin kunye nomxholo we-pigment.Ngokwesiqhelo, i-fiberglass eqhelekileyo ye-SMC roving yi-2400tex, kwaye kukho iimeko ezimbalwa apho iyi-4800tex.
1.1.3Ukuzulazula okungajikwanga ukujija
Ukuze wenze imibhobho ye-FRP enobunzima obahlukeneyo, indlela yokujija itanki yokugcina yavela.Kwi-roving for winding, kufuneka ibe neempawu ezilandelayo.
(1) Kufuneka kube lula ukuyiteyipha, ngokuqhelekileyo ibe nokumila kweteyiphu esicaba.
(2) Ekubeni i-roving jikelele engasontiyo idla ngokuwa xa ikhutshiwe ebhobhini, kufuneka kuqinisekiswe ukuba ukuthotywa kwayo kukuhle kakhulu, yaye isilika ebangelwayo ayinakuba mdaka njengendlwane yentaka.
(3) Uxinzelelo alukwazi ukuba lukhulu okanye luncinci ngokukhawuleza, kwaye i-phenomenon ye-overhang ayinakwenzeka.
(4) Imfuneko yoxinaniso lomgca wokujikeleza okungajikwanga kufuneka ifane kwaye ibe ngaphantsi kwexabiso elichaziweyo.
(5) Ukuze kuqinisekiswe ukuba kulula ukumanziswa xa udlula kwitanki ye-resin, ukunyanzeliswa kwe-roving kufuneka kube kuhle.
1.1.4Ukujikeleza ngenxa ye-pultrusion
Inkqubo ye-pultrusion isetyenziswa ngokubanzi ekwenzeni iiprofayili ezahlukeneyo kunye namacandelo ahlukeneyo.I-roving for pultrusion kufuneka iqinisekise ukuba umxholo wefiber yeglasi kunye namandla angaqhelekanga akwinqanaba eliphezulu.I-roving ye-pultrusion esetyenziswa kwimveliso yindibaniselwano yemicu emininzi yesilika ekrwada, kwaye eminye inokuba yi-rovings ethe ngqo, zombini zinokwenzeka.Ezinye iimfuno zayo zokusebenza ziyafana nezo ze-rovings ezijikelezayo.
1.1.5 I-Twistless Roving yokuluka
Kubomi bemihla ngemihla, sibona amalaphu e-gingham anobungqingqwa obahlukeneyo okanye amalaphu ajikelezayo kwicala elinye, angumzekelo wolunye usetyenziso olubalulekileyo lwe-roving, esetyenziselwa ukuluka.I-roving esetyenziswayo ikwabizwa ngokuba yi-roving for weaving.Uninzi lwala malaphu luphawulwe kwi-FRP yokubumba ngesandla.Ukuluka iirovings, ezi mfuno zilandelayo mazifezekiswe:
(1) Ayigugi ngokwentelekiso.
(2) Kulula ukuteyipha.
(3) Ekubeni ubukhulu becala isetyenziselwa ukuluka, kufuneka kubekho inyathelo lokomisa ngaphambi kokulukwa.
(4) Ngokubhekiselele kwingcinezelo, kuqinisekiswa ngokukodwa ukuba ayinakuba ngokukhawuleza enkulu okanye encinci, kwaye kufuneka igcinwe ifanayo.Kwaye uhlangabezane neemeko ezithile malunga ne-overhang.
(5) Ukuthotywa kungcono.
(6) Kulula ukungeniswa nge-resin xa udlula kwi-tank ye-resin, ngoko ke ukunyanzeliswa kufuneka kube kuhle.
1.1.6 Ukuzulazula ngaphandle kwe-twistless for preform
Into ebizwa ngokuba yinkqubo ye-preform, ukuthetha ngokubanzi, i-pre-forming, kwaye imveliso ifunyenwe emva kwamanyathelo afanelekileyo.Kwimveliso, siqale sinqumle i-roving, kwaye sitshize i-roving enqunqiweyo kumnatha, apho umnatha kufuneka ube ngumnatha onemilo emiselweyo.Emva koko fafaza i-resin ukumila.Ekugqibeleni, imveliso emise oko ifakwa kumngundo, kwaye intlaka iyatofwa ize icinezelwe ngokushushu ukufumana imveliso.Iimfuno zokusebenza kwi-preform rovings ziyafana nezo zejethi.
1.2 Ilaphu leglasi elijikelezayo
Maninzi amalaphu ajikelezayo, kwaye igingham yenye yawo.Kwinkqubo ye-FRP yokubeka isandla, i-gingham isetyenziswa ngokubanzi njengeyona nto ibalulekileyo.Ukuba ufuna ukwandisa amandla e-gingham, ngoko kufuneka utshintshe i-warp kunye ne-weft direction yelaphu, enokuthi iguqulwe ibe yi-gingham engabonakaliyo.Ukuze kuqinisekiswe umgangatho wengubo ye-checkered, ezi mpawu zilandelayo kufuneka ziqinisekiswe.
(1) Kwilaphu, kufuneka ukuba ibe tyaba ngokupheleleyo, ngaphandle kwamaqhuma, imiphetho kunye neekona kufuneka zithe tye, kwaye kungabikho amanqaku amdaka.
(2) Ubude, ububanzi, umgangatho, ubunzima kunye nokuxinana kwelaphu kufuneka kuhambelane nemigangatho ethile.
(3) Imicu yeglasi kufuneka isongwe kakuhle.
(4) Ukukwazi ukungeniswa ngokukhawuleza nge-resin.
(5) Ukoma kunye nokufuma kwamalaphu alukiweyo kwiimveliso ezahlukeneyo kufuneka kuhlangabezane neemfuno ezithile.
1.3 I-glass fiber mat
Okokuqala unqumle imicu yeglasi uze uyifefe kwibhanti ye-mesh elungiselelwe.Emva koko ufefe i-binder kuyo, uyitshise ukuze unyibilike, uze uyipholise ukuze uqiniswe, kwaye i-strand mat eqoshiwe yenziwe.Iimethi zefayibha ezinqunqiweyo zisetyenziswa kwinkqubo yokubeka isandla kunye nasekulukeni kweenwebu ze-SMC.Ukuze kuphunyezwe umphumo ogqwesileyo wokusetyenziswa kwe-strand mat eqoshiwe, kwimveliso, iimfuno ze-strand mat ezinqunqiweyo zilandelayo.
(1) Imethi yonke enqunqwe umsonto isicaba kwaye ilungelelene.
(2) Imingxuma ye-strand mat echotshiweyo incinci kwaye ifana nobukhulu
(4) Ukuhlangabezana nemigangatho ethile.
(5) Inokuzaliswa ngokukhawuleza ngentlaka.
1.3.2 Imethi yestrand eqhubekayo
Iintambo zeglasi zibekwe phantsi kwibhanti ye-mesh ngokweemfuno ezithile.Ngokuqhelekileyo, abantu bamisela ukuba kufuneka babekwe phantsi kumfanekiso we-8. Emva koko ufefe i-adhesive powder phezulu kunye nobushushu ukunyanga.Iimethi ze-strand eziqhubekayo ziphezulu kakhulu kunemicu enqunqiweyo ekuqiniseni izinto ezidibeneyo, ngokukodwa ngenxa yokuba iifayili zeglasi kwimicu ye-strand eqhubekayo iyaqhubeka.Ngenxa yesiphumo esingcono sokuphucula, isetyenziswe kwiinkqubo ezahlukeneyo.
1.3.3Umphezulu Mat
Ukusetyenziswa kwemethi yomphezulu kukwaxhaphakile kubomi bemihla ngemihla, njengomaleko we-resin yeemveliso ze-FRP, ephakathi kwe-alkali yeglasi yomphezulu mat.Thatha i-FRP njengomzekelo, kuba i-surface mat yayo yenziwe ngeglasi ye-alkali ephakathi, yenza i-FRP izinze ngokwekhemikhali.Kwangaxeshanye, ngenxa yokuba i-surface mat ilula kakhulu kwaye incinci, inokufunxa i-resin engaphezulu, engenako ukudlala indima yokukhusela kuphela kodwa idlale indima entle.
1.3.4Inaliti yokhuko
Inaliti imat yahlulwe ikakhulu ngamacandelo amabini, udidi lokuqala lunqunqwe ifayibha yenaliti yokuhlatywa.Inkqubo yokuvelisa ilula, okokuqala unqumle i-fiber yeglasi, ubukhulu bumalunga ne-5 cm, uyifefe ngokungacwangciswanga kwizinto ezisisiseko, emva koko ubeke i-substrate kwibhanti yokuhambisa, uze uhlabe i-substrate ngenaliti ye-crochet, ngenxa isiphumo inaliti crochet, Imicu ihlatywe kwi-substrate kwaye emva koko yacatshukiswa ukuba yenze isakhiwo esine-dimensional ezintathu.I-substrate ekhethiweyo nayo ineemfuno ezithile kwaye kufuneka ibe nemvakalelo epholileyo.Iimveliso ze-needle mat zisetyenziswa ngokubanzi kwi-sound insulation kunye ne-thermal insulation materials ngokusekelwe kwiipropati zabo.Ngokuqinisekileyo, inokusetyenziswa kwakhona kwi-FRP, kodwa ayizange idume ngenxa yokuba imveliso efunyenweyo inamandla aphantsi kwaye ijwayele ukuphuka.Olunye uhlobo lubizwa ngokuba yi-continuous filament needle-punched mat, kwaye inkqubo yemveliso ikwalula kakhulu.Okokuqala, i-filament iphonswa ngokungaqhelekanga kwibhanti ye-mesh elungiselelwe kwangaphambili kunye nesixhobo sokuphosa ucingo.Ngokufanayo, inaliti ye-crochet ithathwa kwi-acupuncture ukuze yenze isakhiwo se-fiber ye-three-dimensional.Kwifiber yeglasi eyomeleziweyo ye-thermoplastics, iimathi zeenaliti eziqhubekayo zisetyenziswa kakuhle.
Iintsinga zeglasi ezinqunqiweyo zinokutshintshwa zibe ziimilo ezimbini ezahlukeneyo ngaphakathi koluhlu lobude obuthile ngokusebenzisa isenzo sokuthunga somatshini wokubopha.Eyokuqala kukuba ibe yimethi ye-strand enqunqiweyo, ethi ithabathel' indawo i-binder-bonding mat ye-strand enqunqiweyo.Eyesibini yi-long-fiber mat, ethatha indawo ye-strand mat eqhubekayo.Ezi ndlela zimbini ezahlukeneyo zinenzuzo efanayo.Abazisebenzisi izinto zokuncamathelisa kwinkqubo yokuvelisa, bephepha ukungcoliseka nokumosha, kwaye banelise usukelo lwabantu lokulondoloza ubuncwane nokukhusela okusingqongileyo.
1.4 Iintsinga ezigayiweyo
Inkqubo yokuvelisa i-fiber yomhlaba ilula kakhulu.Thatha ilitye lokusila okanye ilitye lokusila uze ufake iintsinga ezinqunqiweyo kuyo.Iintsinga zokugaya kunye nokusila nazo zinezicelo ezininzi kwimveliso.Kwinkqubo yokusabela, ifayibha egayiweyo isebenza njengesixhobo sokuqinisa, kwaye ukusebenza kwayo kubhetele kakhulu kunokweminye imicu.Ukuze ugweme ukuqhekeka kunye nokuphucula i-shrinkage ekwenzeni izinto ezityhidiweyo kunye neemveliso ezibunjiweyo, iifibers ezigayiweyo zingasetyenziswa njengezizaliso.
1.5 ilaphu leFiberglass
1.5.1Ilaphu leglasi
Yeyohlobo lwelaphu lefibre yeglasi.Ilaphu leglasi eliveliswe kwiindawo ezahlukeneyo linemigangatho eyahlukeneyo.Kwintsimi yelaphu yeglasi kwilizwe lam, yahlulwe kakhulu ibe ziindidi ezimbini: ilaphu leglasi elingena alkali kunye nelaphu leglasi eliphakathi.Ukusetyenziswa kwendwangu yeglasi kunokuthiwa kuninzi kakhulu, kwaye umzimba wesithuthi, i-hull, itanki yokugcina eqhelekileyo, njl.Kwilaphu leglasi yealkali ephakathi, ukumelana nokubola kwayo kungcono, ngoko isetyenziswa kakhulu kwimveliso yokupakishwa kunye nemveliso enganyangekiyo.Ukugweba iimpawu zamalaphu efiber yeglasi, kubaluleke kakhulu ukuqala kwimiba emine, iipropathi zefiber ngokwayo, ubume bemisonto yeglasi, i-warp kunye ne-weft direction kunye nepateni yelaphu.Kwindlela ye-warp kunye ne-weft, ukuxinana kuxhomekeke kwisakhiwo esahlukileyo somsonto kunye nepateni yelaphu.Iimpawu ezibonakalayo zelaphu zixhomekeke kwi-warp kunye ne-weft density kunye nesakhiwo somsonto weglasi.
1.5.2 IRibhoni yeglasi
Iribhoni yeglasi yahlulwe ikakhulu yaziindidi ezimbini, uhlobo lokuqala yi-selvedge, uhlobo lwesibini yi-selvedge engalukwanga, elukiweyo ngokwepatheni ye-plain weave.Iiribhoni zeglasi zingasetyenziselwa iindawo zombane ezifuna iimpawu eziphezulu ze-dielectric.Amalungu aphezulu ezixhobo zombane.
1.5.3 Ilaphu elilungelelanisiweyo
Iindwangu ezingafaniyo kubomi bemihla ngemihla ziboshwe kwiintambo ezimbini zobunzima obuhlukeneyo, kunye neendwangu ezibangelwayo zinamandla aphezulu kwicala eliphambili.
1.5.4 Ilaphu elinamacala amathathu
Ilaphu le-dimensional-dimensional lihluke kwisakhiwo sendwangu yendiza, i-dimensional-dimensional, ngoko umphumo wayo ungcono kune-fiber yendiza jikelele.I-fiber-dimensional fiber-reinforced composite material ineenzuzo ukuba ezinye izinto ezidibeneyo ze-fiber-reinforced composite azikho.Ngenxa yokuba i-fiber i-dimensional-dimensional, umphumo uphelele ungcono, kwaye ukuxhathisa umonakalo kuba namandla.Ngophuhliso lwesayensi kunye nethekhnoloji, ukwanda kwemfuno yayo kwi-aerospace, iimoto kunye neenqanawa yenze le teknoloji yakhula ngakumbi, kwaye ngoku ithatha indawo kwibala lezemidlalo kunye nezixhobo zonyango.Iindidi zelaphu ezine-dimensional-dimensional zohlulwe kakhulu zibe ziindidi ezintlanu, kwaye zininzi iimilo.Kuyabonakala ukuba indawo yokuphuhliswa kweendwangu ezintathu-dimensional inkulu.
1.5.5 Ilaphu elimilisekileyo
Amalaphu abunjiweyo asetyenziselwa ukuqinisa izinto ezidibeneyo, kwaye imilo yazo ixhomekeke ikakhulu kwimilo yento eza kuqiniswa, kwaye, ukuze kuqinisekiswe ukuthotyelwa, kufuneka kufakwe kumatshini ozinikeleyo.Kwimveliso, sinokwenza iimilo ze-symmetrical okanye ze-asymmetrical kunye nemida ephantsi kunye namathemba amahle.
1.5.6 Ilaphu elingundoqo eligrunjiweyo
Ukwenziwa kwelaphu elingundoqo le-groove nalo lilula.Amacandelo amabini eendwangu afakwe ngokuhambelana, kwaye ke adityaniswe yimivalo ethe nkqo, kwaye iindawo zabo ezinqamlezileyo ziqinisekiswa ukuba zingonxantathu eziqhelekileyo okanye iingxande.
1.5.7 Ilaphu elithungelwe yiFiberglass
Lilaphu elikhethekileyo, abantu bakwalibiza ngokuba lilaphu elinithiweyo kunye nemethi elukiweyo, kodwa ayililo ilaphu nemethi njengoko silazi ngokwesiqhelo.Kuyafaneleka ukukhankanya ukuba kukho ilaphu elithungelweyo, elingalukwanga kunye ne-warp kunye ne-weft, kodwa ligqitywe ngokuhlukileyo yi-warp kunye ne-weft.:
1.5.8 I-Fiberglass insulating sleeve
Inkqubo yemveliso ilula noko.Okokuqala, kukhethwe imisonto yeglasi yefibre, ize ke ilukwe ibe yi-tubular shape.Emva koko, ngokweemfuno zebakala ezahlukeneyo zokugquma, iimveliso ezifunwayo zenziwe ngokuzigquma nge-resin.
1.6 Indibaniselwano yefiber yeglasi
Ngophuhliso olukhawulezayo lwemiboniso yesayensi kunye nethekhnoloji, itekhnoloji yefiber yeglasi nayo yenze inkqubela ebonakalayo, kwaye iimveliso ezahlukeneyo zefiber zeglasi ziye zavela ukusuka ngo-1970 ukuza kuthi ga ngoku.Ngokuqhelekileyo kukho oku kulandelayo:
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(2) Ilaphu elijikelezayo elingajikwanga + nemethi yomsonto enqunqiweyo
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(4) Ukuzulazula ngokungacwangciswanga + kwanqunyulwa umlinganiselo wokuqala wemethi
(5) I-carbon fiber ye-unidirectional + i-strand mat okanye ilaphu elinqunqiweyo
(6) Imethi yomphezulu + imisonto enqunqiweyo
(7) Ilaphu leglasi + iglasi intonga encinci okanye i-unidirectional roving + ilaphu leglasi
1.7 Ilaphu leglasi elingalukwanga
Le teknoloji ayizange ibonwe okokuqala kwilizwe lam.Itekhnoloji yokuqala yaveliswa eYurophu.Kamva, ngenxa yokufuduka kwabantu, le teknoloji yaziswa eUnited States, eMzantsi Korea nakwamanye amazwe.Ukuze kuphuhliswe uphuhliso loshishino lweglasi, ilizwe lam liseke iifektri ezininzi ezinkulu kwaye lityale imali eninzi ekusekweni kwemigca yemveliso ekumgangatho ophezulu..Kwilizwe lam, iimethi zeglasi zefiber ezifakwe emanzini zahlulwe kakhulu ngokwezi ndidi zilandelayo:
(1) Ukhuko lophahla lunendima ebalulekileyo ekuphuculeni iimpawu ze asphalt inwebu neeshingles ezinemibala yeasphalt, nto leyo ezenza zibe ntle ngakumbi.
(2) Imethi yombhobho: Kanye njengegama, le mveliso isetyenziswa ikakhulu kwimibhobho.Ngenxa yokuba ifayibha yeglasi ikwazi ukumelana nomhlwa, inokukhusela umbhobho ekudlekeni.
(3) I-surface mat isetyenziswa kakhulu kumphezulu weemveliso ze-FRP ukuyikhusela.
4Inokwenza iindonga zibe tyaba ngakumbi kwaye akufuneki ukuba zilungiswe iminyaka emininzi.
(5) Imethi yomgangatho isetyenziswa ikakhulu njengesiseko kwimigangatho yePVC
(6) umethi wekhaphethi;njengesiseko sezinto kwiikhaphethi.
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2 Ukusetyenziswa okuthe ngqo kwefiber yeglasi
2.1 Umgaqo wokuqinisa ifayibha yeglasi ikhonkrithi eqinisiweyo
Umgaqo wefayibha yeglasi eyomeleziweyo ikhonkrithi ifana kakhulu naleyo yefiber yeglasi eyomeleziweyo yemathiriyeli ehlanganisiweyo.Okokuqala, ukongeza i-fiber yeglasi kwikhonkrithi, i-fiber yeglasi iya kuthwala uxinzelelo lwangaphakathi lwezinto eziphathekayo, ukuze ulibazise okanye uthintele ukwandiswa kwe-micro-cracks.Ngethuba lokuqulunqwa kweengqungquthela zekhonkrithi, izinto ezisebenza njenge-aggregate ziya kuthintela ukuvela kweentanda.Ukuba umphumo odibeneyo ulungile ngokwaneleyo, iintanda aziyi kukwazi ukwandisa kunye nokungena.Indima yefiber yeglasi kwikhonkrithi i-aggregate, enokuthintela ngokufanelekileyo isizukulwana kunye nokwandiswa kweentanda.Xa ukuqhekeka kusasazeka kwindawo ekufutshane nefayibha yeglasi, ifayibha yeglasi iya kuthintela inkqubela phambili yokuqhekeka, ngaloo ndlela inyanzelise ukuqhekeka ukuba kuphambuke, kwaye ngokuhambelanayo, indawo yokwandiswa kwendawo yokuqhekeka iya kwandiswa, ngoko ke amandla afunekayo umonakalo nawo uya kwandiswa.
2.2 Indlela yokutshatyalaliswa kwefiber yeglasi eqinisiweyo ikhonkrithi
Phambi kokuba ifayibha yeglasi eyomeleziweyo yaphuke ikhonkrithi, amandla okuqina ayithwalayo abelana ikakhulu ngekhonkrithi kunye nefiber yeglasi.Ngethuba lenkqubo yokuqhaqha, uxinzelelo luya kudluliselwa kwikhonkrithi ukuya kwifiber yeglasi ekufutshane.Ukuba amandla e-tensile ayaqhubeka nokukhula, i-fiber yeglasi iya konakaliswa, kwaye iindlela zomonakalo ubukhulu becala ngumonakalo wokucheba, ukonakala koxinzelelo, kunye nomonakalo wokutsala.
2.2.1 Ukusilela kokucheba
Uxinzelelo lwe-shear oluthwalwa yi-glass fibre eqinisiweyo ikhonkrithi yabelwana ngefiber yeglasi kunye nekhonkrithi, kwaye uxinzelelo lwe-shear luya kudluliselwa kwi-fiber yeglasi ngekhonkrithi, ukwenzela ukuba isakhiwo sefiber yeglasi siya konakala.Nangona kunjalo, i-fiber yeglasi ineenzuzo zayo.Inobude obude kunye nendawo encinci yokumelana ne-shear, ngoko ke ukuphuculwa kokumelana nokucheba kwefiber yeglasi kubuthathaka.
2.2.2 Ukusilela koxinzelelo
Xa i-tensile force ye-fiber yeglasi inkulu kunenqanaba elithile, i-fiber yeglasi iya kwaphuka.Ukuba ikhonkrithi iyaqhekeka, i-fiber yeglasi iya kuba yinde kakhulu ngenxa ye-tensile deformation, umthamo wayo osecaleni uya kuncipha, kwaye amandla okuqina aya kuphuka ngokukhawuleza.
2.2.3 Umonakalo wokutsala
Nje ukuba ikhonkrithi iqhekezeke, amandla okuxinana kwefiber yeglasi aya kwandiswa kakhulu, kwaye amandla okuqina aya kuba makhulu kunamandla phakathi kwefiber yeglasi kunye nekhonkrithi, ukuze ifayibha yeglasi yonakaliswe kwaye emva koko itsalwe.
2.3 Iimpawu ze-Flexural zefiber yeglasi eqinisiweyo ikhonkrithi
Xa ikhonkrithi eyomeleziweyo ithwala umthwalo, i-curve yayo yoxinzelelo-uxinzelelo iya kwahlulwa ibe ngamanqanaba amathathu ahlukeneyo ukusuka kuhlalutyo lomatshini, njengoko kuboniswe kumzobo.Inqanaba lokuqala: i-elastic deformation yenzeke kuqala de kwenzeke ukuqhekeka kokuqala.Olona phawu luphambili lweli nqanaba kukuba i-deformation inyuka ngokulandelelana kude kube kwindawo A, emele amandla okuqala okuqhekeka kwefiber yeglasi eyomeleziweyo.Isigaba sesibini: xa i-concrete iqhekeka, umthwalo owuthweleyo uya kudluliselwa kwiifayili ezikufutshane ukuba zithwale, kwaye umthamo wokuthwala unqunywe ngokwe-fiber yeglasi ngokwayo kunye namandla okudibanisa kunye nekhonkrithi.Inqaku B lelona gunya liguquguqukayo lokugqibela lefiber yeglasi eyomeleziweyo.Inqanaba lesithathu: ukufikelela kumandla okugqibela, i-fiber yeglasi iyaphuka okanye ikhutshwe, kwaye imicu eseleyo isenokuthwala inxalenye yomthwalo ukuqinisekisa ukuba i-brittle fracture ayiyi kwenzeka.
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Ixesha lokuposa: Jul-06-2022
